In 2014, Six States Had Obesity Rates Below 25%. None Do Anymore.

Every state that once sat below the 25% obesity threshold has now crossed it. Colorado, the leanest state in 2014 at 21.3%, now sits at exactly 25.0%. DC climbed from 21.7% to 25.5%. Hawaii and Massachusetts both reached 27.0%, up from 22.1% and 23.3%. Vermont added 4.2 points to reach 29.0%, the steepest climb in the group. California went from 24.7% to 29.1%. The floor has risen everywhere, and yesterday's least-affected states are simply several points heavier.

The Former Elite Still Lead, but the Gap Has Closed

The six states that sat below 25% in 2014 still occupy the bottom six ranks in 2024. The ordering has barely shuffled. Colorado leads, DC follows, Hawaii and Massachusetts are tied, Vermont is fifth, California sixth. A decade of change, and the relative hierarchy is nearly identical.

What has changed is the absolute level. In 2014, Colorado's 21.3% sat nearly 4 points clear of the 25% threshold. Today it sits exactly at that threshold. The states that once represented a distinct low-obesity tier have converged toward the national pack, even as they retain their relative positions.

Vermont and California, the two states closest to the 25% line in 2014, both now approach 30%, a range that would have placed them in the middle of the national distribution a decade ago.

The 25% Threshold Is Now a Floor, Not a Ceiling

In 2014, 25% functioned as a ceiling that only six states stayed beneath. By 2024, it's the national floor. No state sits below it. The entire distribution has shifted upward.

The range of increases is remarkably tight. The smallest gain was 3.7 percentage points, shared by Colorado and Massachusetts. The largest was Hawaii's 4.9-point climb. Every formerly sub-25% state added between 3.7 and 4.9 points over the decade, regardless of where it started.

That consistency is hard to dismiss. Colorado (Mountain West), Hawaii (Pacific), Massachusetts (Northeast), Vermont (Northeast), California (Pacific), and DC (Mid-Atlantic) span radically different demographic compositions, health systems, food environments, and political landscapes. Yet all moved in the same direction by roughly the same magnitude. Whatever is driving the increase operates at a level that individual state circumstances barely modulate.

California tells the story in miniature. At 24.7% in 2014, it was closest of the six to the threshold. At 29.1% today, it nearly hits 30% while still ranking sixth-lowest nationally. It added 4.4 points and still outperforms most of the country. Even the states doing relatively well are doing measurably worse.

If the six leanest states all gained 3.7 to 4.9 points regardless of their differences, the next question is whether states at the top of the distribution moved by the same amount, or whether the gap has widened. That would tell us whether we're watching a uniform national shift or a growing divide.